diff --git a/include/constants/generational_changes.h b/include/constants/generational_changes.h
index 701330ae10..4a9cc47dc0 100644
--- a/include/constants/generational_changes.h
+++ b/include/constants/generational_changes.h
@@ -129,7 +129,7 @@
     F(SHADOW_TAG_ESCAPE,         shadowTagEscape,         (u32, GEN_COUNT - 1)) /* TODO: use in tests */ \
     F(MOODY_ACC_EVASION,         moodyAccEvasion,         (u32, GEN_COUNT - 1)) \
     F(FLASH_FIRE_FROZEN,         flashFireFrozen,         (u32, GEN_COUNT - 1)) /* TODO: use in tests */ \
-    F(SYNCHRONIZE_TOXIC,         synchronizeToxic,        (u32, GEN_COUNT - 1)) /* TODO: use in tests */ \
+    F(SYNCHRONIZE_TOXIC,         synchronizeToxic,        (u32, GEN_COUNT - 1)) \
     F(UPDATED_INTIMIDATE,        updatedIntimidate,       (u32, GEN_COUNT - 1)) \
     F(OBLIVIOUS_TAUNT,           obliviousTaunt,          (u32, GEN_COUNT - 1)) \
     F(STURDY,                    sturdy,                  (u32, GEN_COUNT - 1)) \
diff --git a/src/battle_util.c b/src/battle_util.c
index ea4c918d40..90532e2360 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -5500,7 +5500,7 @@ u32 AbilityBattleEffects(enum AbilityEffect caseID, u32 battler, enum Ability ab
             gBattleScripting.battler = gBattlerAbility = gBattlerTarget;
             RecordAbilityBattle(gBattlerTarget, ABILITY_SYNCHRONIZE);
 
-            if (B_SYNCHRONIZE_TOXIC < GEN_5 && gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
+            if (GetConfig(CONFIG_SYNCHRONIZE_TOXIC) < GEN_5 && gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
                 gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_POISON;
 
             if (CanSetNonVolatileStatus(
@@ -5530,7 +5530,7 @@ u32 AbilityBattleEffects(enum AbilityEffect caseID, u32 battler, enum Ability ab
             gBattleScripting.battler = gBattlerAbility = gBattlerAttacker;
             RecordAbilityBattle(gBattlerAttacker, ABILITY_SYNCHRONIZE);
 
-            if (B_SYNCHRONIZE_TOXIC < GEN_5 && gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
+            if (GetConfig(CONFIG_SYNCHRONIZE_TOXIC) < GEN_5 && gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
                 gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_POISON;
 
             if (CanSetNonVolatileStatus(
diff --git a/test/battle/ability/synchronize.c b/test/battle/ability/synchronize.c
index 8e92936e41..8604814fab 100644
--- a/test/battle/ability/synchronize.c
+++ b/test/battle/ability/synchronize.c
@@ -3,11 +3,13 @@
 
 SINGLE_BATTLE_TEST("Synchronize will mirror back non volatile status back at opposing mon")
 {
-
+    u32 config;
+    PARAMETRIZE { config = GEN_4; }
+    PARAMETRIZE { config = GEN_5; }
     GIVEN {
         ASSUME(GetMoveEffect(MOVE_TOXIC) == EFFECT_NON_VOLATILE_STATUS);
         ASSUME(GetMoveNonVolatileStatus(MOVE_TOXIC) == MOVE_EFFECT_TOXIC);
-        ASSUME(GetMoveNonVolatileStatus(MOVE_TOXIC) == MOVE_EFFECT_TOXIC);
+        WITH_CONFIG(CONFIG_SYNCHRONIZE_TOXIC, config);
         PLAYER(SPECIES_WOBBUFFET);
         OPPONENT(SPECIES_ABRA) { Ability(ABILITY_SYNCHRONIZE); }
     } WHEN {
@@ -18,7 +20,10 @@ SINGLE_BATTLE_TEST("Synchronize will mirror back non volatile status back at opp
         STATUS_ICON(opponent, badPoison: TRUE);
         ABILITY_POPUP(opponent, ABILITY_SYNCHRONIZE);
         ANIMATION(ANIM_TYPE_STATUS, B_ANIM_STATUS_PSN, player);
-        STATUS_ICON(player, badPoison: TRUE);
+        if (config >= GEN_5)
+            STATUS_ICON(player, badPoison: TRUE);
+        else
+            STATUS_ICON(player, poison: TRUE);
     }
 }